Deep Learning Approach for Detection of Underground Natural Gas Micro-Leakage Using Infrared Thermal Images.

But in the later stage, the tall stalks and the large leaf of the corn covered the stress area and generated shadows to affect the temperature extraction by the thermal imager, making a decreasing trend of the stress range on the infrared thermal image.

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The concentration of natural gas in soil gradually accumulated and diffused with time, so the stress range of grass and wheat showed a trend of gradually expanding.

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